Goodwill, Customer Relationships and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of acquisition-related intangible assets

Goodwill, customer relationships and other intangible assets consisted of the following:

	September 30, 2020		December 31, 2019
	(Dollars in millions)
Goodwill	$	7,369	7,415
Customer relationships, less accumulated amortization of $2,058 and $1,538	$	6,315	6,865
Capitalized software, less accumulated amortization of $229 and $146	409		395
Trade names, less accumulated amortization of $76 and $57	55		74
Total other intangible assets, net	$	6,779	7,334

Schedule of goodwill

The following table shows the rollforward of goodwill from December 31, 2019 through September 30, 2020:

	(Dollars in millions)
As of December 31, 2019	$	7,415
Effect of foreign currency exchange rate changes and other	(46)
As of September 30, 2020	$	7,369

Schedule of estimated amortization expense of finite-lived acquisition-related intangible assets

We estimate that total amortization expense for intangible assets for the years ending December 31, 2020 through 2024 will be as follows:

	(Dollars in millions)
2020 (remaining three months)	$	211
2021	841
2022	780
2023	752
2024	740